/* bzflag
 * Copyright (c) 1993-2020 Tim Riker
 *
 * This package is free software;  you can redistribute it and/or
 * modify it under the terms of the license found in the file
 * named COPYING that should have accompanied this file.
 *
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/* XWindow:
 *  OpenGL X window.
 */

#ifndef BZF_XWINDOW_H
#define BZF_XWINDOW_H

#include "BzfWindow.h"
#include "XDisplay.h"
#include <X11/Xlib.h>
#include <GL/glx.h>

class XVisual;

class XWindow : public BzfWindow
{
public:
    XWindow(const XDisplay*, XVisual*);
    ~XWindow();

    bool        isValid() const;

    void        showWindow(bool);

    void        getPosition(int& x, int& y);
    void        getSize(int& width, int& height) const;

    void        setTitle(const char*);
    void        setPosition(int x, int y);
    void        setSize(int width, int height);
    void        setMinSize(int width, int height);
    void        setFullscreen(bool on);

    void        warpMouse(int x, int y);
    void        getMouse(int& x, int& y) const;
    void        grabMouse();
    void        ungrabMouse();
    void        showMouse();
    void        hideMouse();

    void        setGamma(float);
    float       getGamma() const;
    bool        hasGammaControl() const;

    void        makeCurrent();
    void        swapBuffers();
    void        makeContext();
    void        freeContext();

    // other X stuff
    static XWindow* lookupWindow(Window);

    static void     reactivateAll();
    static void     deactivateAll();

private:
    void        loadColormap();
    unsigned short  getIntensityValue(float i) const;
    static float    pixelField(int i, int bits, int offset);
    static void     countBits(unsigned long mask, int& num, int& offset);

private:
    XDisplay::Rep*  display;
    Window      window;
    Colormap        colormap;
    GLXContext      context;
    bool        noWM;
    bool        defaultColormap;
    XWindow*        prev;
    XWindow*        next;
    XVisualInfo     visual;
    unsigned long*  colormapPixels;
    XSizeHints*  xsh;
    float       gammaVal;
    static XWindow* first;
};

#endif // BZF_XWINDOW_H

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